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Modified asphalt and its continuous production method and system

A technology of modified asphalt and production method, applied in the processing of tar asphalt/petroleum asphalt/natural asphalt, processing tar asphalt/petroleum asphalt/natural asphalt by heating, processing tar asphalt/petroleum asphalt/natural asphalt by chemical methods, etc. , which can solve the problems of high level of automation, high content of modified asphalt and narrow molecular weight distribution

Active Publication Date: 2021-07-06
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to provide a modified asphalt continuous production system and method in order to overcome the problems existing in the prior art. The composition of the modified asphalt continuous production system provided by the present invention is simplified, and can continuously carry out the production of modified asphalt. The coking problem is not easy to occur in the production process, the automation level is high, the modified asphalt product has a high content of medium molecules and large molecules, and the molecular weight distribution is narrow

Method used

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  • Modified asphalt and its continuous production method and system
  • Modified asphalt and its continuous production method and system

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Embodiment approach

[0044] In the prior art, the asphalt is usually transported to the reaction kettle through a high standard difference for reaction, but the inventors of the present invention have found that the method of high standard difference can easily cause the pressure imbalance of the reactor parts at all levels, and the asphalt The degree of evaporation in the reactors at all levels is different. When the evaporation amount is small, the gas phase pressure is small, and vice versa, and it changes continuously with the production process. Therefore, it will lead to the evacuation of some reactors and the occurrence of asphalt blockage. Phenomenon. The inventors of the present invention have found through research that by setting the power supply unit 10 between the discharge port of the asphalt liquid heating unit 12 and the feed port of the asphalt polymerization reaction system 2, the asphalt that reaches the predetermined reaction temperature Transporting to the feed port of the asp...

Embodiment 1

[0075] This example is used to illustrate the continuous production system and process of modified asphalt provided by the present invention.

[0076] Modified asphalt continuous production system: such as figure 1 As shown, the asphalt polymerization reaction system includes four-stage reactors set in series (the height of the reactor is 3m, the diameter of ф1m, and a built-in blade stirrer) and the first-stage spare reactor.

[0077] Continuous production method of modified asphalt: introduce the aforementioned asphalt liquid into the asphalt liquid storage unit 11 (with a molten salt insulation layer outside to maintain the temperature of the asphalt liquid), and pump it into the asphalt heating pipe sleeve through the asphalt feed pump In the inner pipe, the flow rate of asphalt in the inner pipe is 2-2.5m / s, the outer pipe of the asphalt heating sleeve is filled with molten salt, and the mixed material is heated to 380-420°C at a speed of 240°C / h , to obtain the asphalt ...

Embodiment 2

[0081] This example is used to illustrate the continuous production system and process of modified asphalt provided by the present invention.

[0082] Use the modified asphalt continuous production system of Example 1 and carry out the production of modified asphalt according to the modified asphalt continuous production method, the difference is that the asphalt melt is not used as above by adding the asphalt melt to the four-stage reaction including series settings In the bitumen polymerization reaction system 2 of the tank, the bitumen melt is added to the bitumen polymerization reaction system 2 including four-stage reactors arranged in series through a high standard difference, and the high standard difference is 5m.

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Abstract

The invention relates to the field of modified asphalt production, and discloses modified asphalt and its continuous production method and system. The system includes: a continuous heating feed system (1) and a downstream asphalt polymerization reaction system (2), and a continuous heating feed system The discharge port is connected with the feed port of the asphalt polymerization system; the continuous heating feed system includes an asphalt liquid storage unit (11) and an asphalt liquid heating unit (72), and the asphalt polymerization system includes 2-8 grades of reactors connected in series and at least Level 1 standby reactor; bituminous liquid heating unit includes space for filling bitumen and molten salt separately. The method includes: heating the asphalt liquid to a predetermined temperature to form an asphalt melt, and adding it to an asphalt polymerization reaction system for contact reaction; heating the molten asphalt through molten salt; the polymerization reaction system includes 2-8 reactors connected in series and at least 1 level spare reactor. The obtained modified asphalt has uniform softening point, good stability, low content of low-molecular components, and can be continuously produced.

Description

technical field [0001] The invention relates to the production field of modified asphalt, in particular to a continuous production system of modified asphalt and the modified asphalt produced by the method. Background technique [0002] Asphalt is widely used in the non-ferrous metallurgical industry. With the improvement of environmental protection requirements, medium-temperature asphalt as a raw material for carbon products is gradually replaced. Further processing of medium-temperature asphalt to produce modified asphalt has become the development direction of tar processing plants. Modified asphalt overcomes the disadvantages of low softening point of medium-temperature asphalt, low content of β resin, easy softening at high temperature, easy volatilization, and difficult transportation in summer, so it is an ideal binder. Therefore, modified asphalt is widely used in metallurgy and chemical production, and can also be used as linoleum and other building materials. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10C3/02C10C3/00
CPCC10C3/002C10C3/02
Inventor 闫学良罗峰刘均庆王珂梁文斌常彬杰矫卫东
Owner CHNA ENERGY INVESTMENT CORP LTD
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